sabre

DARPA is now beginning to narrow in on a design for the XS-1, an experimental spaceplane that would allow quick, relatively inexpensive access to orbital altitudes. DARPA foresees a “one day turnaround,” or daily launches for the unmanned orbital delivery drone — and why not? With no pilot and small financial footprint, why not make daily updates to your orbital assets?

Though it’s still only a concept, Reaction Engines believes its SABRE engine is the way of the future for space and commercial flight. With a secret new engine concept and support from the European Space Agency, Reaction Engines is coming ever closer to producing its engine and realizing its beliefs.

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